196522405 has 4 divisors (see below), whose sum is σ = 235826892. Its totient is φ = 157217920.

The previous prime is 196522349. The next prime is 196522421. The reversal of 196522405 is 504225691.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 504225691 = 97 ⋅5198203.

It can be written as a sum of positive squares in 2 ways, for example, as 31708161 + 164814244 = 5631^2 + 12838^2 .

It is not a de Polignac number, because 196522405 - 2¹⁵ = 196489637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19652236 + ... + 19652245.

It is an arithmetic number, because the mean of its divisors is an integer number (58956723).

Almost surely, 2^196522405 is an apocalyptic number.

It is an amenable number.

196522405 is a deficient number, since it is larger than the sum of its proper divisors (39304487).

196522405 is an equidigital number, since it uses as much as digits as its factorization.

196522405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39304486.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 196522405 is about 14018.6449059815. The cubic root of 196522405 is about 581.3941935398.

The spelling of 196522405 in words is "one hundred ninety-six million, five hundred twenty-two thousand, four hundred five".